Missing Apostrophe

Use an apostrophe when you write a contraction. A contraction is the joining of two words by eliminating some letters and adding an apostrophe. For example:

can't is the contraction of cannot

won't is the contraction of will not

shouldn't is the contraction of should not

it's is the contraction of it is

Without the apostrophe, these contractions are misspelled. The frequently used contraction "let's" is the shortened form of "let us." Sometimes writers confuse "let's" for the verb "lets" (allow).

For other uses of the apostrophe, see the section on "Possessive Errors."